Deuteron induced activation cross section measurement for IFMIF

Ochiai, Kentaro; Nakao, Makoto*; Kubota, Naoyoshi; Sato, Satoshi; Yamauchi, Michinori; Ishioka, Noriko; Nishitani, Takeo; Konno, Chikara  

The International Fusion Materials Irradiation Facility (IFMIF) is an accelerator-based D-Li neutron source with 40MeV high intense deuteron beam. The deuteron beam strike structural materials inside the acceleration tube and produce radioactive substances. Accurate deuteron-induced activation cross section database is required for the quantitative evaluation, but there exists no appropriate database because of few experimental data. Thus we have measured deuteron induced activation cross sections for pure metals, which are prospective candidate materials for IFMIF, i.e. aluminum, vanadium, chromium, manganese, iron, nickel, copper, tantalum, tungsten and gold, at TIARA in JAEA. Stacked metal foils were irradiated by deuteron beam of 25, 35, 41 and 50 MeV. After the irradiation and suitable cooling time, -rays emitted from the irradiated foils were measured by a high-purity Germanium detector. So far deuteron induced activation cross sections of 30 reactions were obtained in the wide energy range of 14-49 MeV. The measured cross sections were compared with other experimental data and values evaluated by the ALICE-F and TALYS codes.